A business occupancy we're working on has 550 occupants, and requires three means of egress per Section 7.4.1.2 (NFPA 101, 2018 Edition).
Section 7.5.1.1.1 indicates that egress shall be arranged such that each occupant has access to not less than two means of egress. When the three means of egress are required per Section 7.4.1.2, does access to all three means of egress need to be provided to each occupant? Or will providing access for each occupant to a minimum of two means of egress satisfy the code requirement? Sent in anonymously for discussion. Click Title to View | Submit Your Question | Subscribe
7 Comments
Alex
12/16/2022 07:41:22 am
When determining number of exits, there are two main driving factors: occupant load and common path of travel.
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Glenn Berger
12/16/2022 08:12:51 am
In addition to Alex's response, if possible ensure that all egress components are sized for the same number of occupants. By this I mean, do not size 1 exit for 50% of the occupants, 1 exit for 40% of the occupants, and the last exit for 10% of the occupants.
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Jesse
12/16/2022 08:30:22 am
Glenn beat me to the follow-up point on Alex's response. The reason for this of course is that it is expected occupants will evacuate by using the means of egress furthest away from the hazard. Obviously, this applies to just the two means of egress also,
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Todd E Wyatt
12/16/2022 08:52:37 am
Determining the Occupancy Classification(s) (OC) and if the building is protected throughout by an automatic sprinkler system (ASPS) are additional requirements when evaluating the Means of Egress (MOE).
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12/16/2022 05:58:27 pm
In addition to the aboved clarification, We need to satisfied tha code about the number of means of egress to meet the time to evacuate all the occupants of the buiding as 100 person per unit of exit width. Also include in our design the formula in the remoteness of each means of egress.
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Chuck
1/11/2023 03:52:19 pm
Q. When the three means of egress are required per Section 7.4.1.2, does access to all three means of egress need to be provided to each occupant?
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Steven Reilly
3/2/2023 02:26:28 am
So only 2 of the exits need to meet the exit separation requirements of 7.5.1.3, and there is no code requirement for the 3rd exit to meet the same remotness criteria? As a rule of thumb I try to ensure the 3rd exit is more than 45 degrees away at the end of the common path employing the UK regulations
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